Like, you know, yelling at someone in a meeting, swearing aggressively, etc etc.
This behavior will eventually get you fired. It's unprofessional, demoralizes employees, and opens you up to legal embarrassment if one of the people you berated ever sues your company. I will agree that the people who engage in yelling/swearing at employees are generally male, but it's absolutely not true that this is how masculine professionals "generally"* conduct themselves at most companies.
* If you're referring to startups in particular, where a founder cult-of-personality can have a totalizing effect on employees, they are the exception and not the rule.
No, this still doesn't make sense. Professionals can and should be courteous to one another. Software developers can, too.
???
"Masculine professions" are things that people do, and we can definitely challenge almost all generalizations here. Unfortunately, the person you're replying to never mentioned professions.